It converts electrical energy into mechanical vibration. 1.2 Machining unit for Ultrasonic machining :- Fig 1.3 The above figure schematically depicts the major components of a typical ultrasonic machining setup. c) Tools and slurry View Answer, 2. The vibrations, produced by a welding sonotrode or horn, as it is generally known, are used to soften or melt the thermoplastic material at the joint line. A. This high frequency alternating current is supplied to the transducer. © 2011-2020 Sanfoundry. In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. a) True we respect your privacy and take protecting it seriously, What is Heat Exchanger? here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Advanced Machining Questions and Answers – Ultrasonic Machining – Introduction, Next - Advanced Machining Questions and Answers – USM – Material Removal, Advanced Machining Questions and Answers – Ultrasonic Machining – Introduction, Machine Design Questions and Answers – Cast Steel & Aluminium Alloys, Chemical Engineering Questions and Answers, Instrumentation Transducers Questions and Answers, Mechanical Operations Questions and Answers, Linear Integrated Circuits Questions and Answers, Electronic Devices and Circuits Questions and Answers, Mechanical Behaviour & Testing of Materials Questions and Answers, Manufacturing Engineering / Processes I Questions and Answers, Mechanical Engineering Questions and Answers, Manufacturing Engineering / Processes II Questions and Answers, Machine Tools & Machining Questions and Answers, Advanced Machining Processes Questions and Answers, Advanced Machining Questions and Answers – Laser Beam Machining-Introduction, Advanced Machining Questions and Answers – EBM-Applications, Advantages and Disadvantages, Advanced Machining Questions and Answers – EDM-Surface Integrity, Advanced Machining Questions and Answers – Electronbeam Machining-Introduction, Equipment and Material removal, Advanced Machining Questions and Answers – Electro Discharge Machining-Introduction, Advanced Machining Questions and Answers – USM – Factors Affecting MRR, Advanced Machining Questions and Answers – AWJM – Machining System. Loss of fatigue strength and hence surface integrity is another problematic area in machining of titanium. A typical ultrasonic plastic welder consists of five basic components: power supply, actuator, converter, booster and horn. This slurry is made to flow across the w/p and the tip of the tool during machining process. Ultrasonic Machining is one of the types of Non-Traditional Machining methods which produces Circular, non-Circular holes of very small size is <1mm size can be produced by using this Ultrasonic Machining Method.. An electric current at high frequency (in the ultrasonic range i.e. b) Concentrator The power supply converts 115V 60 Hz electrical energy into 15, 20, 30 or 40 kHz electrical energy. The tool is vibrating at high frequency and low amplitude in the presence of fine abrasive particles. EQUIPMENT • Ultrasonic Machining consists of : 1.High Power sine wave generator. Ultrasonic components: the right solutions for every need All our products are designed and developed in-house after careful research and experimentation. EATON, Ohio – November 24, 2020 – Bullen Ultrasonics is Dayton Business Journal’s 2020 Business of the Year. What is the value of the amplitude obtained when we use mechanical amplifier? The vibration exciter, a magnetostrictive transducer 1, is fixed to the body 2 of the acoustic head using the shoulder 3 and the thin walled cup 4. It is commonly used to machine brittle and hard materials. Ultrasonic Machining (USM) and Ultrasonic Machining Tool: The use of ultrasonics in machining was first proposed by L. Balamuth in 1945. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. f 3. Ultrasonic Machining is the oldest form of machining process which can be used to machine brittle materials such as glass and ceramics. Ultrasonic vibration machining can be used only to machine materials that have hardness value atleast 45 HRC (HRC: Rockwell Scale to measure hardness of a material). The mechanical vibration generated is used for machining the surface of a part in the presence of abrasive grain particles in the form of slurry. Electro-mechanical Transducer: A typical UT inspection system … The winding of the The motion of the tool takes place vertically or orthogonal to the surface of the part. Your email address will not be published. A. 18-10-2016 AKHIL MANHAS 6. c) Joule In Ultrasonic Machining, magnetostrictor converts magnetic energy into which type of energy? The control unit has an electronic oscillator that produces an alternating current with high ultrasonic frequency ranges in between 18 kHz to 40 kHz. In Ultrasonic Machining, magnetostrictor converts magnetic energy into which type of energy? a) True b) False View … Subscribe to our mailing list and get interesting stuff and updates to your email inbox. c) 50 L/min 1. b) False A basic ultrasound machine has the following parts: Transducer probe - probe that sends and receives the sound waves Central processing unit (CPU) - computer that does all of the calculations and contains the electrical power supplies for itself and the transducer probe When the tool presses against the w/p, the slurry containing abrasive particle chips off the materials from the surface. a 2. View Answer, 3. The process models were found to contain empirical constants which usually require specific material data for their calculation.Since a limited amount of the composite was available, and ultrasonic machining has many process variables, a Taguchi factorial experiment was conducted in order to ascertain the most relevant factors in machining. Bijoy Bhattacharyya, Biswanath Doloi, in Modern Machining Technology, 2020. generally above 16 kHz. What Companies In The Oil Industry Can Do To Enhance Worker Safety? (mech), mnnit, allahabad (formerly m.n.r.e.c., allahabad), 1987 m.tech. He has completed his B.Tech degree in mechanical engineering in the year 2015. The main reason why this machining process is used in the manufacturing area is because it evolves less heat in the process. He loves to share his knowledge and help others. How Electron Beam Machining Process Works? Required fields are marked *. c) Thermal energy This is essential. Sanfoundry Global Education & Learning Series – Advanced Machining. To practice all areas of Advanced Machining, here is complete set of 1000+ Multiple Choice Questions and Answers. d) 50 – 100 µm The machined parts produced require fewer finishing process because of absence of burrs in the process. View Answer, 5. It is made of low carbon steel. advertisement. 3.Innovative geometric design of products and components made of new exotic materials with desired tolerance , surface finish cannot be produced economically by conventional machining. Ultrasonic machining—on the other hand—can machine carbide directly in one set-up with minimal tool wear and eliminates the need to produce electrodes. (C) Tool wear is negligible since the tool material is always harder than (D) The larger the abrasive particles, the larger the oversize of the cut. Name and ID 1. What is Drilling Machine and How It Works? To simplify medical equipment selection, you can use our convenient search system to find the right product at a reasonable cost. The transducer converts this alternating current into mechanical vibration and transmits this mechanical vibration to the sonotrode attached to it. Material that has a high scrap rate means fragile material can be machined by this process very effectively. (A) USM employs an abrasive slurry. The machining system of USM contains which of the following components? m a) True b) False 13. 6.6.1 Introduction. The transducer for USM works on the following principle • Piezoelectric effect • Magnetostrictive effect b) Electrical energy 1. a) 0.0001 – 0.001 µm A typical ultrasonic plastic welder consists of five basic components: power supply, actuator, converter, booster and horn. a) Magnetostrictor In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. One end of it is connected with the transducer and other end contains tool. The smaller grains (i.e. What is the value of the amplitude obtained without mechanical amplifier? It consists of a generator for supplying a high frequency electric current, a transducer to convert this into a mechanical motion in the form of a high frequency vibration, a holder … 2.Magneto-strictive Transducer. The vibration of the tool fixed to the end of the horn is ultrasonically vibrated by the amplitude amplifying rod (horn), forcing the abrasive suspension to continuously hit at high speed and polishing t… 1. Major Parts of an Ultrasound Machine and Workflow An ultrasound scanner consists of a number of components including a transducer probe, a central processing unit (CPU), a monitor, a keyboard with control knobs, disk storage devices, a printer and so on.. 2. This set of Advanced Machining Processes Multiple Choice Questions & Answers (MCQs) focuses on “USM – Machining System”. The sonotrode vibrates at low amplitude and high frequency and removes material from the w/p by abrasion where it contacts it. Its function is to produce a vibration in the tool. A sonographer can adjust the duration of an acoustic pulse since it depends upon the pulse's propagation speed. The maximum value per part was specified to be 5 CFU. With CNp, the bacterial load could be brought significantly below 0.5 CFU (colony-forming unites). - Complete Explanation, What is Steam Condenser - Complete Explanation, Water Jet Machining - Working Principle, Advantages…, What is Slotter Machine - Parts, Types, Working,…, Different Types of Screws in Fastening Process. The slurry flows across the tool and workpiece. 1. Ultrasonic Machining is a non-traditional process, in which abrasives contained in a slurry are driven against the work by a tool oscillating at low amplitude (25-100 microns) and high frequency (15-30 kHz). The transducer is driven by suitable signal generator followed by power amplifier. In regard to USM (ultrasonic machining), which one of the following is NOT true? The ultrasonic generator is responsible for converting the incoming power frequency from 60hz to the frequency required by the ultrasonic transducers which are installed in the system, typically 25kHz, 40kHz or 80kHz. Transducer then vibrates sonotrode at low amplitude and high frequency. Inaudible sounds (Ultrasonic frequency) can used to attack these devices by exploiting the above vulnerability. 4. Ultrasonic machine generates high frequency vibrating wave of frequency about 20000 to 30000 Hz and amplitude about 25-50 micron. During ultrasonic machining, the metal removal is achieved by (a) high frequency eddy currents (b) high frequency sound waves (c) hammering action of abrasive particles (d) rubbing action between tool and workpiece 2. Parts of Ultrasonic Machining: The Ultrasonic Machine consists of different parts as follows: Power Supply; Electro-mechanical transducer; Velocity Transformer; Tool; Abrasive Slurry; Abrasive gun; Workpiece; 1. The pulse duration is expressed in the same units as the _____. This electrical energy is converted into mechanical vibrations, and for this piezo-electric effect in natural or synthetic crystals or magne-trostriction effect exhibited by some metals is utilized. The welding stand houses the converter, booster and horn in a rigid, The above figure schematically depicts the major components of a typical ultrasonic machining setup. Electrochemical Machining (ECM) – Working Principle, Equipment, Advantages and Disadvantages with Application. This leads indentation of abrasive particle to brittle work piece and removes metal from the contact surface. Ultrasonic machining can be used to machine both metallic and nonmetallic materials: (a) true or (b) false. When this vibrating sonotrode strikes the surface of the w/p, it removes the material form it. a) Magnetostrictor b) Concentrator c) Tools and slurry d) All of the mentioned View Answer. a) 1 – 10 µm All Rights Reserved. Components b) 0.001 – 0.1 µm Ultrasonic System Components All ultrasonic cleaning equipment requires essentially 2 component groups; the Ultrasonic Generator, and a plurality of Ultrasonic Transducers. • The transducer, which generates the ultrasonic vibration • The horn or concentrator, which mechanically amplifies the vibration to the required amplitude of 15 – 50 μm and accommodates the tool at its tip. adverse effects can lower the working life of the components critically. There is no change observed in the physical properties of the material. The ultrasonic generator converts the power frequency AC power into an ultrasonic frequency oscillation with a certain power output. 2. Join our social networks below and stay updated with latest contests, videos, internships and jobs! Slurry to machining zone Return slurry Fig. In Ultrasonic Machining, Magnetostrictor is energized at ultrasonic frequency. In RUM, a vertically rotating tool is allowed to revolve about the axis of the sonotrode. a) True The machining of deep holes is not easy by this method because of the inability of abrasive slurry to flow at the bottom of the hole (Except rotary ultrasonic machining). This high frequency vibration transfer to abrasive particle contains in abrasive slurry. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional measurements, material characterization, and more. Advantages of USM• Machining any materials regardless of their conductivity• USM apply to machining semi-conductor such as silicon, germanium etc.• USM is suitable to precise machining brittle material.• USM does not produce electric, thermal, chemical abnormal surface.• Can drill circular or non-circular holes in very hard materials• Less stress because of its non-thermal characteristics 1. 6.22) is perhaps the most important part of the machine. The … The surface of the tool is impregnated with diamonds that is used to grind down the surface of the part. Answer: d Explanation: In machining system of USM, the above mentioned components have to be present. Comment document.getElementById("comment").setAttribute( "id", "ac143893bcccd2aa6ed1ce9c671b6295" );document.getElementById("afedd766af").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment. The term ultrasonic is used to describe a vibratory wave of the frequency above that of the upper-frequency limit of the human ear, i.e. The machining system of USM contains which of the following components? Using a user-friendly filter, you can set the following parameters to get necessary results: a price, year, manufacturer, model, priority options, and desired technical features. Ultrasonic machining is of particular interest for the cutting of non-conductive, brittle workpiece materials such as engineering ceramics. 2. The first report on the equipment and technology appeared during 1951-52. View Answer, 6. The control unit consists of an electronic oscillator which produces an alternating current at high frequency. Match List-I (Machining process) with List-II (Associated medium) and select the correct answer using the codes … The wear of sonotrode tip occurs more quickly. The transducer and sonotrode is attached to the control unit with a cable. d) Turing Components of Ultrasonic Machining: The important components of the machine are: (i) Acoustic Head: The acoustic head (Fig. What is Electrochemical Grinding and How it Works? 3.Tool Holder. Rotary Ultrasonic vibration machining (RUM): Laser Beam Machining – Main Parts, Principle, Working with Application. Ultrasonic machining is changing the manufacturing industries with its superlative performance. a) Balamuth The most essential component is the transducer probe. View Answer. View Answer, 7. 18 kHz to 40 kHz) is used to generate mechanical vibration of low amplitude and high frequency. a) Magnetostrictor b) Concentrator c) Tools and slurry d) All of the mentioned View Answer. Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make measurements. How To Find The Best Sheet Metal Products On The Market? Why Choose CNC Aluminum Over Other Metals For Prototyping? All the operations done with the ultrasonic machining method are cost effective and best in results. “The 140-person operation provided 90 percent of the glass pressure sensor components used in the manufacturing of ventilators and respirators during the early months of the COVID-19 pandemic.” Applications of electron beam machining are limited to metallic work materials due to the need for the work to be electrically conductive: (a) true or (b) false. The device for converting any type of energy into ultrasonic waves is the ultrasonic transducer. The machining system of USM contains which of the following components? The vibration exciter, a magnetostrictive transducer 1, is fixed to the body 2 of the acoustic head using the shoulder 3 and the thin walled cup 4. d) 10 – 100 µm Transducer: The transducer mainly consists of a cylinder which is made up of piezoelectric ceramic. The simplicity of the The slurry used in the ultrasonic machining contains 20 % to 60% of water by volume, aluminum oxide, boron Carbide and silicon carbide particles. Also, ultrasonic cleaning is insufficient for narrow gap dimensions, which the instrument contains. b) 10 – 40 µm The Ultrasound machine. 4.Tool. When very frequency vibrations are applied on to the tool, the tool is vibrating at a very high frequency. The frequency produced is usually in between 18 kHz to 40 kHz in ultrasonic range. The function of various parts are described below. d) 75 L/min The abrasive gain particles in the slurry helps in the removal of the material form the surface of the w/p. This material, called slurry, is a mixture of a free-flowing liquid and one or more types of solid abrasive. False. Vibration assisted machining utilized vibration ranging from low to high frequency with small amplitude. It can machine fragile materials such glass and non-conductive metals which are not machined by non-traditional methods such as electrochemical machining or. c) 1 – 10 µm State whether following statement is true or false. Of the following scientists, who discovered magnetostrictor effect? The transducer operates by magnetron striction. The ultrasonic machining (USM) process consists of two methods, namely, ultrasonic impact grinding and rotary USM. The power supply converts 115V 60 Hz electrical energy into 15, 20, 30 or 40 kHz electrical energy. It also provides schematic representations of the components used in rotary USM and ultrasonic impact grinding. d) None of the mentioned b) Steve O Flawer 1. The transducer mainly consists of a cylinder which is made up of piezoelectric ceramic. What to Know If You’re Planning to Buy a Car in 2021? The slurry is formed by mixing fine abrasive grains in the water. Glass, carbides, ceramics, precious stones and hardened steels are the most common materials machined by USM. One specific application includes machining a die in HRC 63 hardened steel followed by an identical die in carbide. And this is because, no heat is generated by the sonotrode against the w/p. It converts electrical energy into mechanical vibration. This machining process is usually used to machine brittle materials and materials that have high hardness. In USM, tool tips must have low resistance and fatigue strength. Answer: d Explanation: In machining system of USM, the above mentioned components have to be present. Your email address will not be published. 11. Ultrasonic machining (USM) also known as ultrasonic grinding (USG) is a unique non-traditional manufacturing process in which material is removed from the surface of workpiece by using the axially oscillating tool. High power ultrasonic machining components and systems have been developed during the last forty years, but have not achieved an accepted place in the industrial environment. True. The grain sizes of the abrasive material are typically ranges from 100 to 1000. c) 40 – 50 µm Power Supply: To starts, the machining process power is required. An ultrasonically vibrating mill consists of two major components, an electroacoustic transducer and a sonotrode, attached to an electronic control unit with a cable. Magne-trostriction’ means a change in the dimension occurring in f… It is very precise machining method and used in the creation of micro-electrochemical system components like micro-structured glass wafers. b) 25 L/min The function of various parts are described below. The machining system of USM contains which of the following components? The transducer converts the ultrasonic frequency oscillation into an ultrasonic mechanical vibration. The original low frequency components used to modulate the ultrasound carrier are demodulated and interpreted by the SR systems due to this effect. Quiz 5. C. IC Fabrication involves five general stages. Components of an Ultrasonic Assembly System. Transducer then vibrates … In this machining, a chemically reactive abrasive fluid is used for the machining process. At what rate slurry is pumped through nozzle in USM? View Answer, 8. The ultrasonic machining machine consists of two main parts transducer and sonotrode (also called as horn), connected to an Electronic control unit with cables. The key to an ultrasonic machining process is the abrasive liquid. By 1954, the machine tools, using the ultrasonic principle, had been designed and constructed. View Answer, 4. As the diagram showing the first is connected to the power supply. a) 10 L/min To illustrate the general inspection principle, a typical pulse/echo inspection configuration as illustrated below will be used. Unlike an X-ray machine, which uses electromagnetic waves to form images of the human body, ultrasound machines use sound; more specifically, it uses ultrasound waves (hence the name ‘ultrasound machine’) to find out what’s going on inside the body. By browsing through our catalog you will be able to find ready-to-use ultrasonic components such as cutting and welding kits or components that can be installed into fully or semi-automated assembly line systems. a) Mechanical energy Can I Buy an Ultrasound Machine? Abrasive slurry is not used in this type of machine for material removal. The slurry flows in between the tool and workpiece and helps in the removal of the material from the surface. b) Contact/Contactless power transfer system (for circular knife type processing systems). An electronic oscillator in the control unit produces an alternating current oscillating at a high frequency, usually between 18 and 40 kHz in the ultrasonic range. Period B. PRF C. Wavelength D. Density. Working Principle of Ultrasonic Machining. (B) In USM, the tool forms a reverse image in the workpiece. a) Magnetostrictor b) Concentrator c) Tools and slurry d) All of the mentioned 12. Factors to Consider When Buying Your Child Their First Car. d) All of the mentioned Generally, ultrasonic vibration is used for machining especially brittle materials with the help of abrasives slurry in which material removal is achieved by brittle fractures. The sonotrode is vibrated by the transducer with low amplitude and high frequency. Pankaj Mishra is a blogger by passion and Mechanical Engineer by profession. The tool travel with an amplitude of 0.05 mm to 0.125 mm (0.002 in to 0.005 in). ultrasonic machining (usm) system synopsis submitted by h. l a l c h h u a n v e l a b.e. 7 Skills Engineering Students Should Develop Today To Remain Relevant Tomorrow, How to Fix an Ignition Key That Doesn’t Turn, Understanding and Utilizing CNC Machining. b) False Ultrasonic assisted machining is a machining operation based on the intermittent cutting of material which is obtained through vibrations generated by an ultrasonic system. The ultrasonic vibrations are produced by the transducer. Ultrasonic welding, for thermoplastic injection moulded components, is a process that uses mechanical vibrations above the audible range. The ultrasonic machining machine consists of two main parts transducer and sonotrode (also called as horn), connected to an Electronic control unit with cables. The pulse duration of an ultrasound and transducer system does not change significantly as long as the system components remain unchanged. Components of an Ultrasonic Assembly System. 18-10-2016 AKHIL MANHAS 5. The basic fatigue properties of many titanium alloys rely on a favorable compressive surface stress induced by tool action during machining (Ezugwu and Wang, 1997). Integration of ultrasonic machining systems with ... systems integrated with straight blade and circular knife cutting tools for ultrasonic machining of NHCs have the following key components: a) Power supply system (electric control panel and ultrasonic generator). This article lists the major ultrasonic components that are similar to both rotary USM and ultrasonic impact grinding. higher number of grain) results in smooth surface finishes. It is capable of producing high tolerance parts. This machining method is capable of machining brittle and hard material with high precision. There is no distortion produced in the worked material. The metal removal is slow due to micro chipping or erosion mechanism. 9.2.7 Schematic view of an Ultrasonic Machine The ultrasonic vibrations are produced by the transducer. USM is used in precision machining of hard and brittle material. Ultrasonic Machining (USM) also called as ultrasonic vibration machining is a machining process in which material is removed from the surface of a part by low amplitude and high frequency vibration of a tool against surface of material in the presence of abrasive particles. Sine wave generator method is capable of machining brittle and hard materials sanfoundry contest! View … 11 place vertically or orthogonal to the sonotrode against the w/p, the machine are: ( ). High scrap rate means fragile material can be used for the cutting of non-conductive, brittle workpiece materials as. And jobs workpiece materials such glass and non-conductive Metals which are not by... Showing the first is connected to the power supply: to starts, the flows. By L. Balamuth in 1945 directly in one set-up with minimal tool wear and eliminates the need to electrodes., which the instrument contains None of the material form the surface of machine... Frequency oscillation with a certain power output is insufficient for narrow gap dimensions which. Connected with the ultrasonic generator converts the power frequency AC power into an ultrasonic mechanical to... Is expressed in the Year 2015 of absence of burrs in the tool forms a reverse image the. Answer, 8 which produces an alternating current with high ultrasonic frequency ) used... V e l a b.e is attached to it careful research and experimentation • ultrasonic machining setup is capable machining! Transfer system ( for circular knife type processing systems ) it removes the material the... Tool takes place vertically or orthogonal to the sonotrode is vibrated by the sonotrode characterization, more... To it by suitable signal generator followed by power amplifier is to produce electrodes ) 75 L/min View.! Oscillation with a certain power output mentioned View Answer, 8 range i.e material... The w/p by abrasion where it contacts it components, is a blogger by passion and mechanical Engineer by.. L a l c h h u a n v e l a b.e electric current at high.... System does not change significantly as long as the diagram showing the first is connected with ultrasonic... Containing abrasive particle contains in abrasive slurry the _____ ( colony-forming unites ) Tools, using ultrasonic...: power supply converts 115V 60 Hz electrical energy into 15, 20, or... Very frequency vibrations are applied on to the transducer mainly consists of cylinder. Vibrations above the audible range results in smooth surface finishes unit consists of a cylinder which is made of... Vibrated by the sonotrode ( colony-forming unites ) and sonotrode is attached to the sonotrode at... Commonly used to grind down the surface with CNp, the machine are: ( i ) Head. Lists the major components of the machine are: ( i ) acoustic Head the. Machining consists of five basic components: power supply, actuator, converter booster. Is pumped through nozzle in USM, the bacterial load could be brought significantly below 0.5 (! A blogger by passion and mechanical Engineer by profession glass wafers 0.5 CFU ( colony-forming unites.! ) results in smooth surface finishes specific Application includes machining a die in 63! How to find the best Sheet metal products on the Market, using ultrasonic... 25 L/min c ) Joule d ) All of the mentioned 12 by the SR systems to... Is impregnated with diamonds that is used to generate mechanical vibration of low and... Seriously, what is the value of the mentioned View Answer, 3 machining. Off the materials from the contact surface m.n.r.e.c., allahabad ), m.tech...